Hi, Thank you for contacting fixya.com. Check the coils on the rear of the refrigerator and make sure they are clean and dust free. Also check the back wall or floor of the freezer section for frost. Check the evaporator fan to see if it is running. Check the condenser coils under the unit for blockage from dust. Check the condenser fan under the unit to see if it is running. If you have frost in the freezer there is a problem with the defrost system and the freezer will start to warm eventually as well as the fresh food section. If that is the problem you can check the defrost terminator, defrost heater/s, and the defrost timer or adaptive defrost control If used on your unit or the main control board if so equipped. Also check the freezer to ensure it isn't over loaded with food stuff, reason being air must flow freely threw out the entire refrigerator in order for the thermostat to work correctly. Defrost the freezer by disconnecting the power to the refrigerator and letting it sit for at least 24 hours with both the doors open to allow the frost to melt completely but it will build up again in 1-2 weeks and start the warming up again.
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